489667579 has 2 divisors, whose sum is σ = 489667580. Its totient is φ = 489667578.

The previous prime is 489667571. The next prime is 489667589. The reversal of 489667579 is 975766984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489667579 - 2³ = 489667571 is a prime.

It is not a weakly prime, because it can be changed into another prime (489667571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244833789 + 244833790.

It is an arithmetic number, because the mean of its divisors is an integer number (244833790).

Almost surely, 2^489667579 is an apocalyptic number.

489667579 is a deficient number, since it is larger than the sum of its proper divisors (1).

489667579 is an equidigital number, since it uses as much as digits as its factorization.

489667579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 61.

The square root of 489667579 is about 22128.4337222498. The cubic root of 489667579 is about 788.1951957669.

The spelling of 489667579 in words is "four hundred eighty-nine million, six hundred sixty-seven thousand, five hundred seventy-nine".